[DISCUSSION] Add locale and strength for grapheme functions

Hi, Internals I changed below the RFC. - https://wiki.php.net/rfc/grapheme_add_locale_for_case_insensitive Pull request is below: - https://github.com/php/php-src/pull/18792 Change point is below: - Add a strength for grapheme_* functions - Affect to all over the world characters, ex: Ideographic Variation Sequence(IVS) - Use Collator object const values. $locale parameter is not change anything. Because I could not find any way. Maybe I overlooked something, So please point it out to me. Regards Yuya -- --------------------------- Yuya Hamada (tekimen) - https://tekitoh-memdhoi.info - https://github.com/youkidearitai -----------------------------